Do I have to be F-Gas certified to fit an ASHP?

Monobloc style air source heat pumps contain a hermetically sealed refrigeration circuit and do not require F-Gas certification to install. Split style air source heat pumps share or split the refrigerant circuit between the indoor and outdoor units, the pipework between these units must be done by an F-Gas certified engineer. To install and service a Monobloc and Split air source heat pump you need to have a knowledge of plumbing and heating and it is advisable to hold the industry approved NVQ level 3 in air source heat pump installation. From a maintenance perspective, a competent person could replace sensors, PCBs, hydraulic products, casings and the fan. You would need F-Gas certification to work on the refrigerant components.